To explore whether the currently published articles on SLC52A2 expression and cancer are consistent with our conclusions, we searched PubMed, Embase, the Cochrane Library, on April 30, 2021, using the following terms in [All Fields]: BVVLS2, GPR172A, SLC52A2, HRFT3, GPCR41, RFVT2, RFT3, BVVLS2. Here, SLC52A2 is linked to cancer.